The Measure of Consensus

(or The Index of Disagreement)

What is Consensus

The term of "consensus" references to common opinions, beliefs, or perceptions achieved by a group of individuals,
while "disagreement" means the variations of belief, opinion, or attitude. Analytically, consensus
and disagreement are opposites. In other words, each one is the inverse of the other, or, mathematically,
you can say each one is the complement of the other with respect to one or if you add consensus and
disagreement you get one. For instance, if you have a 90% consensus in your group work, it means
that there is 10% disagreement within the same group.